Think about the power to weight ratio--with as little as a plastic vehicle with a passenger or two would weigh on Ceres, the ratio would be very high, especially after they found the ferromagnetics in the belt that could be magnetized a hundred times as strong as today's (that story, "The Pirate", is still in edit), replace the magnets in a 100 watt motor with them, and one watt will run that motor as well as 100 did the old.
They already had real moon buggies, they're still up there. They used wheels, but the moon is a LOT heavier than Ceres.
Imagine playing basketball on Ceres? I might add that to a story, there were microgravity sports in "Mars, Ho!".